One victim, Kaia Marioneaux, 17, was pronounced dead at the scene. Twin brother Kieran Marioneaux and 18-year-old brother Nye'Cole Marioneaux were both transported to area hospitals. Nye'Cole Marioneaux was pronounced dead at the hospital.

Kieran does not appear to have life-threatening injuries.

Rankin County officials said the shootings took place just after the three siblings played cards with Harris. The survivor told police they all went into the living room to watch television, and Harris, who was known to the family, was acting strangely and told them he had a headache.

"Mr. Harris was acting unusual, very fidgety, getting up and down," Guest said. "According to the victim that survived, Mr. Harris pulled from his jacket the weapon that was used."

All three teens were shot in the head, but the survivor had put his arm up in a defensive position and the bullet went through his arm before hitting him in the head.

Richland, Flowood, Madison, Ridgeland and Pearl police departments, along with the Mississippi Highway Patrol and the Mississippi Fusion Center, all provided resources to assist in the search for the suspect. Officers established a search perimeter along South Pearson Road onto Monterey Road.

The suspect had been positively identified by witnesses, so the Rankin County Special Response Team surrounded the suspect’s residence on Ebenezer Road and forced entry.

At 10:10 p.m. they had Harris in custody after they found him hiding in a bathroom. He wouldn't surrender or show his hands, so a K9 was sent in after him and was able to subdue him, officials said.

District Attorney Michael Guest said Harris admitted to shooting the siblings.

Authorities said Harris will be charged with two counts of murder, and with aggravated assault in the shooting of the survivor. Officials said the aggravated assault charge will be upgraded to attempted murder.

Deputies found a .22 caliber rifle under a house across the street. The victims were shot with a .22 caliber gun, but Bailey said the gun described by the survivor was not similar to the rifle. Authorities have recovered a total of three weapons, but they do not believe they have the weapon used in the shootings.

Fareno Da’Quian Harris(Photo11: Rankin County Sheriff's Department)

Kieran told authorities he thought it looked like "possibly some type of Uzi-type of weapon," Guest said.

Guest said Harris was drug tested and there wasn't anything in his system that authorities thought was responsible for the shootings. Authorities are checking with area mental health facilities to see if he has any mental health history.

Bailey said his department has never had interaction with Harris prior to this situation.

Authorities are still doing interviews in the case and trying to uncover a possible motive.

The three victims were Richland High School students. Grief counselors are being provided for the students, a Facebook post said.

"Please turn your thoughts and prayers to the family, our school, and community as we turn our focus on our children and the grieving and healing process."

Authorities asked that people remember the Marineaux family and the teens' friends in their prayers.